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Pentan

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Pentan
Skeletal formula of pentane
Skeletal formula of pentane with all explicit hydrogens added
Ball and stick model of pentane
Ball and stick model of pentane
Spacefill model of pentane
Spacefill model of pentane
Nazivi
IUPAC naziv
Pentan
Identifikacija
3D model (Jmol)
Bajlštajn 969132
ChEBI
ChemSpider
DrugBank
ECHA InfoCard 100.003.358
EC broj 203-692-4
Gmelin Referenca 1766
MeSH pentane
RTECS RZ9450000
UNII
UN broj 1265
  • InChI=1S/C5H12/c1-3-5-4-2/h3-5H2,1-2H3 DaY
    Ključ: OFBQJSOFQDEBGM-UHFFFAOYSA-N DaY
  • CCCCC
Svojstva
C5H12
Molarna masa 72,15 g·mol−1
Agregatno stanje Bezbojna tečnost
Miris Nema miris
Gustina 0,626 g mL−1
40 mg L−1 (na 20 °C)
log P 3,255
Napon pare 57,90 kPa (na 20,0 °C)
kH 7,8 nmol Pa−1 kg−1
Kiselost (pKa) ~45
Baznost (pKb) ~59
λmax 200 nm
Indeks refrakcije (nD) 1,358
Viskoznost 240 μPa s (na 20 °C)
Termohemija
Specifični toplotni kapacitet, C 167,19 J K−1 mol−1
263,47 J K−1 mol−1
−174,1–−172,9 kJ mol−1
−3,5095–−3,5085 MJ mol−1
Opasnosti
GHS piktogrami The flame pictogram in the Globally Harmonized System of Classification and Labelling of Chemicals (GHS) The exclamation-mark pictogram in the Globally Harmonized System of Classification and Labelling of Chemicals (GHS) The health hazard pictogram in the Globally Harmonized System of Classification and Labelling of Chemicals (GHS) The environment pictogram in the Globally Harmonized System of Classification and Labelling of Chemicals (GHS)
GHS signalne reči Opasnost
H225, H304, H336, H411
P210, P261, P273, P301+310, P331
NFPA 704
NFPA 704 four-colored diamondFlammability code 4: Will rapidly or completely vaporize at normal atmospheric pressure and temperature, or is readily dispersed in air and will burn readily. Flash point below 23 °C (73 °F). E.g., propaneHealth code 1: Exposure would cause irritation but only minor residual injury. E.g., turpentineKod reaktivnosti 0: Normalno stabilan, čak i pod stanjem izloženosti vatri; nije reaktivan s vodom (npr. tečni azot)Special hazards (white): no code
4
1
0
Tačka paljenja −49.0 °C
Eksplozivni limiti 1,4–8,3%
Smrtonosna doza ili koncentracija (LD, LC):
  • 3 g kg−1 (dermalno, zec)
  • 5 g kg−1 (oralno, miš)
Srodna jedinjenja
Ukoliko nije drugačije napomenuto, podaci se odnose na standardno stanje materijala (na 25°C [77°F], 100 kPa).
DaY verifikuj (šta je DaYNeN ?)
Reference infokutije

Pentan je peti član homolognog reda alkana; ugljovodonik sa molekulskom formulom CH3(CH2)3CH3. Postoje tri izomera pentana: n-pentan (normalan pentan), 2-metilbutan (poznat i kao izopentan) i 2,2-dimetilpropan (poznat i kao neopentan).

Veoma je zapaljiv i najčešće se dobija iz nafte.

Reference[uredi | uredi izvor]

  1. ^ Li Q, Cheng T, Wang Y, Bryant SH (2010). „PubChem as a public resource for drug discovery.”. Drug Discov Today. 15 (23-24): 1052—7. PMID 20970519. doi:10.1016/j.drudis.2010.10.003.  uredi
  2. ^ Evan E. Bolton; Yanli Wang; Paul A. Thiessen; Stephen H. Bryant (2008). „Chapter 12 PubChem: Integrated Platform of Small Molecules and Biological Activities”. Annual Reports in Computational Chemistry. 4: 217—241. doi:10.1016/S1574-1400(08)00012-1. 
  3. ^ Record of n-Pentane in the GESTIS Substance Database from the IFA, accessed on 19 April 2011

Spoljašnje veze[uredi | uredi izvor]

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